Abstract. The development of next generation Future Internet systems must be capable to address complexity, heterogeneity, interdependency and, especially, evolution of loosely connected networked systems. The European project CON-NECT addresses the challenging and ambitious topic of ensuring eternally functioning distributed and heterogeneous systems through on-the-fly synthesis of the CONNECTors through which they communicate. In this paper we focus on the CONNECT enablers that dynamically derive such connectors ensuring the required non-functional requirements via a framework to analyse and assess dependability and performance properties. We illustrate the adaptive approach under development integrating synthesis of CONNECTors, stochastic model-based analysis performed at design time and run-time monitoring. The proposed framework is illustrated on a case study.